GitHub - microsoft/playwright: Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. Dismiss alert
New browser on the block: Flow - QuirksBlog
2020 is only three weeks old, but there has been a lot of browser news that decreases rendering engine diversity. It’s time for some good news on that front: a new rendering engine, Flow. Below I conduct an interview with Piers Wombwell, Flow’s lead developer. This year alone, on the negative side Mozilla announced it’s laying off 70 people, most of whom appear to come from the browser side of thi
Performance Tips for Background Video
Doug Sillars (@dougsillars) is a leading mobile developer advocate and evangelist. He is widely known as an expert in mobile application architecture, especially when it comes to performance. Doug has worked with thousands of developers around the world, helping them improve the speed, battery life and customer satisfaction of their applications (both native and web). The author of O'Reilly's "Hig
GitHub - unshiftio/url-parse: Small footprint URL parser that works seamlessly across Node.js and browser environments.
url-parse was created in 2014 when the WHATWG URL API was not available in Node.js and the URL interface was supported only in some browsers. Today this is no longer true. The URL interface is available in all supported Node.js release lines and basically all browsers. Consider using it for better security and accuracy. The url-parse method exposes two different API interfaces. The url interface t
ScrapboxでのServiceWorkerとCacheの活用 - daiiz
https://gyazo.com/6650f305b46ff9a2683fd11988e12cf3 https://gyazo.com/ed58dad9ca677c8ab54867fe08cf6817
Is postMessage slow? — surma.dev
Toggle dark mode No, not really. (It depends.) What does “slow” mean? I said it before, and I will say it again: If you didn’t measure it, it is not slow, and even if you measure it, the numbers are meaningless without context. That being said, the fact that people will not even consider adopting Web Workers because of their concerns about the performance of postMessage(), means that this is worth
Automatically detect memory leaks with Puppeteer - Article by Christoph Guttandin - Media Codings
About half a year ago Bronley Plumb kindly made me aware of a memory leak in one of my open-source packages. To see this memory leak in action it was necessary to open a browser and its dev tools to execute some manual steps. On top of that, the memory had to be inspected manually. It was a complicated procedure. Normally I just add a failing test before I fix a bug. This time it was a bit more tr
Raw WebAssembly — surma.dev
Toggle dark mode Can you use the DOM in WebAssembly? Rust says yes, other people say no. Before we can resolve that dissonnance, I need to shine some light on what raw WebAssembly can do. When you go to WebAssembly.org, the very first thing you see is that it’s a “stack-based virtual machine”. It’s absolutely not necessary to understand what that means, or even look at the WebAssembly VM specifica
Faster input events with Facebook’s first browser API contribution
Faster input events with Facebook’s first browser API contribution UPDATE Nov. 19, 2020: As of Chrome 87, the IsInputPending API is now available without the origin trial. The latest API incorporates a number of updates we’ve made in response to feedback from the origin trial, as well as from other members of the W3C Web Performance working group. The time it takes for an interaction to go from th
GitHub - niklasvh/html2canvas: Screenshots with JavaScript
The script allows you to take "screenshots" of webpages or parts of it, directly on the users browser. The screenshot is based on the DOM and as such may not be 100% accurate to the real representation as it does not make an actual screenshot, but builds the screenshot based on the information available on the page. The script renders the current page as a canvas image, by reading the DOM and the
日経電子版とPWAのこれから / PWANight vol.2
PWANight vol.2でお話させていただきました。 https://pwanight.connpass.com/event/121473/?fbclid=IwAR1Icrg4cX-qMXJvY9b4tgY30GCX_0zt6D_R7jz3YqB6jrxRM8y3kcc9FP4 スライド…
アメブロ2019: こえのブログでのPWA | CyberAgent Developers Blog
こえのブログは「声で書くブログ、声で聴くブログ、声で観るブログ」をコンセプトに書き手、読み手双方にバージョンアップしたブログを提供するアメブロの新機能です。 投稿者は端末に向かって喋るだけで、その音声が活字化されブログとして公開できます。閲覧者は活字化された文字を通常のブログと同じように読めるほか、音声を聴きながらでもコンテンツ消費できます。 モバイル端末、テレビ端末やスマートスピーカーなどの普及により、今後ますます増えると予想される利用形態に対して、それぞれに適した形でコンテンツを提供できるように挑戦しています。 この記事では、技術的な側面を中心にこえのブログを紹介します。 こえのブログは、文字でも音声でもコンテンツ消費できるのが特徴です。読者の方へのメッセージや質問に回答など利用法は様々です。龍玄としさんやクロちゃんさんなど著名人の方の声も聴けます。 できる限りサーバーにアクセスしない
Introducing the JetStream 2 Benchmark Suite
Today we are announcing a new version of the JetStream JavaScript benchmark suite, JetStream 2. JetStream 2 combines a variety of JavaScript and WebAssembly benchmarks, covering an array of advanced workloads and programming techniques, and reports a single score that balances them using a geometric mean. JetStream 2 rewards browsers that start up quickly, execute code quickly, and run smoothly. O
Document
Feature Policy allows you to control which origins can use which features, both in the top-level page and in embedded frames. Essentially, you write a policy, which is an allowed list of origins for each feature. For every feature controlled by Feature Policy, the feature is only enabled in the current document or frame if its origin matches the allowed list of origins. For each policy-controlled
JavaScript Loading Priorities in Chrome
February 18, 2019 How browsers schedule and execute scripts can impact the performance of web pages. While techniques like <script defer>, <link rel=preload> (and others) influence script loading, knowing how browsers interpret them can also be helpful. Thanks to Kouhei Ueno, we now have an up to date summary of script scheduling in Chrome.
Rendering on the Web | Articles | web.dev
Published: February 6, 2019, Last updated: January 5, 2026 One of the core decisions web developers must make is where to implement logic and rendering in their application. This can be difficult because there are so many ways to build a website. Our understanding of this space is informed by our work in Chrome talking to large sites over the past few years. Broadly speaking, we encourage develope
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履歴遷移メソッドが非同期となりました (影響あり) | Firefox サイト互換性情報
nanoSQL 2
GitHub - bowser-js/bowser: a browser detector
Cryption